5.5 E: Motor Parameters
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 191
Setting the Motor Leakage Inductance
The motor leakage inductance set to E2-06 determines the amount of voltage drop relative to the motor rated voltage.
Enter this value for motors with a low degree of inductance, such as high-speed motors. This information is usually not
listed on the motor nameplate. Contact the motor manufacturer if the data cannot be found.
Setting the Motor Iron-Core Saturation Coefficient 1, 2
E2-07 and E2-08 are set when Auto-Tuning is performed.
Setting the Motor Mechanical Loss
Only required in Closed Loop Vector Control. The drive compensates for the degree of mechanical loss with torque
compensation. Although E2-09 rarely needs to be changed, adjustment may benefit when there is a large amount of
torque loss due to motor bearing friction.
Setting the Motor Iron Loss for Torque Compensation
Only required when using V/f Control. Enter this value in watts to E2-10. The drive uses this setting to improve the
precision of torque compensation.
◆ E3: V/f Pattern for Motor 2
These parameters set the V/f pattern used for motor 2. Refer to Setting 16: Motor 2 selection on page 205 for details on
switching motors.
Note: The function for switching between two motors cannot be used with a PM motor. E3- parameters are hidden when a PM
motor control mode is selected (A1-02 = 7).
■ E3-04 to E3-10
Parameters E3-04 through E3-10 set up the V/f pattern used for motor 2 as shown in Figure 5.14.
Note: Certain E3- parameters might not be visible depending on the control mode. Refer to Parameter Table on page 394 for
details.
Figure 5.14
Figure 5.14 V/f Pattern for Motor 2
Note: 1. The following conditions must be true when setting up the V/f pattern: E3-09 ≤ E3-07 < E3-06 ≤ E3-04
2. To make the V/f pattern a straight line at a frequency lower than E3-07, set E3-09 equal to E3-07. In this case the E3-08 setting is
disregarded.
3. Parameters E3-04 through E3-10 are reset to their default values when the drive is initialized.
No.
<1> Available in drive software versions PRG: 7012 or later.
<2> Values shown here are for 200 V class drives. Double the value when using a 400 V class drive. Multiply value by 2.875 for 600 V class drives.
<3> Default setting value is dependent on the drive model (o2-04).
Parameter Name Setting Range Default
E3-04
<1>
Motor 2 Max Output Frequency
10.0 to 200.0 Hz 60.0 Hz
E3-05
<1>
Motor 2 Max Voltage
0.0 to 255.0 V
<2>
230.0 V
<2>
E3-06
<1>
Motor 2 Base Frequency
0.0 to 200.0 Hz 60.0 Hz
E3-07
<1>
Motor 2 Mid Output Frequency
0.0 to 200.0 Hz 3.0 Hz
E3-08
<1>
Motor 2 Mid Output Frequency Voltage
0 to 255.0 V
<2> <2> <3>
E3-09
<1>
Motor 2 Minimum Output Frequency
0.0 to 200.0Hz 1.5 Hz
E3-10
<1>
Motor 2 Minimum Output Frequency Voltage
0.0 to 255.0 V
<2> <2> <3>
Output (V)
Frequency (Hz)
E3-05
E3-08
E3-10
E3-09
E3-07
E3-04
SIEP_C710616_38F_5_0.book 191 ページ ２０１５年１１月９日 月曜日 午後３時３６分
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